Kinetic Energy Impactor - Revision history

Ben at 15:15, 30 June 2009

2009-06-30T15:15:20Z

Ben at 14:16, 29 June 2009

2009-06-29T14:16:21Z

Ben at 18:27, 26 June 2009

2009-06-26T18:27:35Z

Ben at 21:57, 22 June 2009

2009-06-22T21:57:53Z

Ben at 21:33, 22 May 2009

2009-05-22T21:33:23Z

Ben at 18:17, 22 May 2009

2009-05-22T18:17:08Z

Ben: New page: Objects like asteroids and comets may be deflected by hitting them with a high-speed spacecraft. Kinetic energy, or energy from motion, turns into an explosion of the object's material. As...

2009-05-22T18:08:01Z

New page: Objects like asteroids and comets may be deflected by hitting them with a high-speed spacecraft. Kinetic energy, or energy from motion, turns into an explosion of the object's material. As...

New page

Objects like asteroids and comets may be deflected by hitting them with a high-speed spacecraft. Kinetic energy, or energy from motion, turns into an explosion of the object's material. As the material blows away from the object, it pushes like rocket exhaust to move it off course, preventing an impact with Earth. Kinetic energy equals the speed-of-impact-squared times mass.

Solar sails enable very high energy impacts with low mass spacecraft. A sail could spiral in towards the sun, then incline the orbit over until the spacecraft orbits the sun opposite the direction as the Earth (aka retrograde). When a retrograde sail hits an asteroid in a non-retrograde orbit, the speed of impact is about double the asteroid's speed around the sun. This dramatically increases the kinetic energy of impact: proportional to 4 times orbit-speed-squared.

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===References===
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[[Category:Planetary Defense]]

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 Solar sails enable very high energy impacts with low mass spacecraft. A sail could spiral in towards the sun, then incline the orbit over until the spacecraft orbits the sun opposite the direction as the Earth (aka retrograde). When a retrograde sail hits an asteroid in a non-retrograde orbit, the speed of impact is about double the asteroid's speed around the sun. This dramatically increases the kinetic energy of impact: proportional to 4 times orbit-speed-squared.
-<!--
+<cite>Dachwaldetal2006b:Dachwaldetal2007:Wie2008b</cite>
-<bibref>Dachwald.etal:2006b</bibref>
-<bibref>Dachwald.etal:2007</bibref>
-<bibref>Wie:2008b</bibref>
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-<cite>Dachwaldetal2006b</cite>
-<cite>Dachwaldetal2007</cite>
-<cite>Wie2008b</cite>
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 #[[Bibliography]]
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 [[Category:Asteroid Deflection]]

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 <bibref>Dachwald.etal:2006b</bibref>
 <bibref>Dachwald.etal:2007</bibref>
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← Older revision		Revision as of 21:33, 22 May 2009
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	[[Category:Planetary Defense]]		[[Category:Planetary Defense]]
		+	[[Category:Asteroid Deflection]]

← Older revision		Revision as of 18:17, 22 May 2009
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	Solar sails enable very high energy impacts with low mass spacecraft. A sail could spiral in towards the sun, then incline the orbit over until the spacecraft orbits the sun opposite the direction as the Earth (aka retrograde). When a retrograde sail hits an asteroid in a non-retrograde orbit, the speed of impact is about double the asteroid's speed around the sun. This dramatically increases the kinetic energy of impact: proportional to 4 times orbit-speed-squared.		Solar sails enable very high energy impacts with low mass spacecraft. A sail could spiral in towards the sun, then incline the orbit over until the spacecraft orbits the sun opposite the direction as the Earth (aka retrograde). When a retrograde sail hits an asteroid in a non-retrograde orbit, the speed of impact is about double the asteroid's speed around the sun. This dramatically increases the kinetic energy of impact: proportional to 4 times orbit-speed-squared.
		+	<bibref>Dachwald.etal:2006b</bibref>
		+	<bibref>Dachwald.etal:2007</bibref>

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